If you're transferring your domicile to Switzerland, your personal belongings can be imported duty free (exceptions apply to food, alcohol and new/unused items). You need to fill in a declaration form and provide proof of transfer of domicile in the form of a Swiss rental agreement, employment contract etc. You'll also need an inventory of all imported goods. Cars are difficult to import from outside Europe, so this is not recommended. The goods must pass the border during regular opening hours at a point where commercial goods are processed. More information on this, along with the declaration form for clearance of household effects (form 18.44) and the list of relocation goods can be found on the website of the Swiss Customs Administration.
